is the amount of money paid for the use of money.
INTEREST
the amount of money borrowed or invested
Principal
the percent of interest
Rate
the number of years, months, or days over which the money is borrowed or invested
Time
the total amount to be paid after having the interest
Amount
If INTEREST is unknown, we can solve it by applying the formula:
Interest = Principal x Rate x Time or
I = P x R x T
If AMOUNT is unknown, we can solve it by applying the formula:
Amount = Principal + Interest or
A = P + I